Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 37,601	$ 36,260
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(24,704)	(24,771)
Property, Plant and Equipment, Net	12,897	11,490
Depreciation Expense	2,300	1,959	$ 2,221
Land, Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	11,823	11,823
Office furnishings, leasehold improvements, computer equipment and computer software
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	25,676	24,281
Transportation and construction equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 102	$ 156